CapSize for a customized errorbar plot

I am writing a customized errorbar for myself. But I do not know how to control the CapSize, like it is controled in the default errorbar; zooming-in or zooming-out doesnot enlarge the Cap. A simplified version of my code is as follow-

function myErrorbar(x, y, h)
for i = 1:length(x)
    y1 = y(i)-h(i);
    y2 = y(i)+h(i);
    
    x1 = x(i)-0.1*h(i);
    x2 = x(i)+0.1*h(i);
    % errorbar
    line([x(i), x(i)], [y1, y2]); hold on 
    % caps
    line([x1, x2], [y1, y1])
    line([x1, x2], [y2, y2])
end

In the above code I have fixed the size of caps equal to 10% of h on either sides. I want to control the capsize like it could be done in the default. The code could be tested with following code

x = 1:10:100;
y = [20 30 45 40 60 65 80 75 95 90];
err = 8*ones(size(y));
myErrorbar(x,y,err)

thanks

Answer 1

[Dinesh Yadav]

As of now, there is no method at present for controlling CapSize using line plot. You can write your custom code only to make caps using line plot. However, you can use

errorbar(x,y,err,'.','CapSize',x); 

where x is the size of Cap you want. This way your plot would look identical except for a small ‘.’ Dot marker in the center of each line. I have implemented your code in MATLAB 2019a on Windows PC and zooming in and out enlarges and decrease the size of Cap as expected.